Re: PRI [7:64999]
error.. bcran not bcsn Amar KHELIFI a icrit dans le message de news: [EMAIL PROTECTED] refer to the BSCN by cisco press by paquet teare for confirmation.; John Botha a icrit dans le message de news: [EMAIL PROTECTED] My opinion of in-band and out-of-band: In-band is when channel control signals are mixed with normal data i.e. dialup. Out-of-band is when a separate channel is used for link control information, i.e. ISDN D-channel. Regards, John Botha CS IT Solutions Tel: +27 (0) 11 205-7000 ext 6851 Fax: +27 (0) 11 807-8992 Cell: 082 334 8267 E-mail:[EMAIL PROTECTED] Adding Value to IT -Original Message- From: Karen E Young [mailto:[EMAIL PROTECTED] Sent: 12 March 2003 07:49 To: [EMAIL PROTECTED] Subject: Re: PRI [7:64999] My take on it is... its out-of-band. It's just multiple logical channels multiplexed onto a single physical channel. It doesn't matter that the logical channels work together, the time slots remain dedicated to their respective channels and the traffic doesn't mix. Just my .02 Karen *** REPLY SEPARATOR *** On 3/11/2003 at 11:37 PM Priscilla Oppenheimer wrote: So, here's a question for you all. I saw this on a practice test. Does ISDN use in-band or out-of-band signaling and is it different for BRI versus PRI? Well, it's not robbed-bit signaling, from what I understand, which I guess means it is out-of-band? The signaling has its own channel. But the signaling channel is bundled with the other channels in the circuit that your order from the telco. BRI has the 2 Bearer channels and the one D channel that enter the CPE together on a 2-wire circuit. With PRI, in Europe, ISDN enters the CPE on an E1 (4-wire ?) circuit. The 15th timeslot is used for signaling. With PRI, in the U.S., ISDN enters the CPE on a T1 4-wire circuit. The 24th timeslot is used for signaling, if you can believe the books. What would be the Cisco answer to the question of ISDN signaling being in-band versus out-of-band? Thanks, Priscilla Jens Neelsen wrote: Hi, Yes, it is one D channel per PRI. An E1 has 32 timeslots of 64kbps (=30B +1D +1timing). A T1 PRI has 24 timeslots + rest (=23D +1D). Timing is in the rest. You can save D channels if put more than one E1/T1 in a bundle. Then you need only one D channel per bundle. So the answer is: not more than one D channel per PRI. Jens --- maine dude wrote: Hi All, Quick question I hope you can help me with. How many D channels does a PRI have? I always thought it was two, but its states 1 in most places. Text taken from the CCNP remote access guide (to make it more confusing): there are 30 timeslots, leaving 2 timeslots for signalling and framing. Timeslot 0 is used for framing and timeslot 16 is used for signalling (counting 0-31). E1 PRI makes use of this same principle. Timeslot 16 is the D channel and timeslot 0 is used for framing information. Please advise. Regards,DJ - With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65298t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: PRI [7:64999]
My opinion of in-band and out-of-band: In-band is when channel control signals are mixed with normal data i.e. dialup. Out-of-band is when a separate channel is used for link control information, i.e. ISDN D-channel. Regards, John Botha CS IT Solutions Tel: +27 (0) 11 205-7000 ext 6851 Fax: +27 (0) 11 807-8992 Cell: 082 334 8267 E-mail:[EMAIL PROTECTED] Adding Value to IT -Original Message- From: Karen E Young [mailto:[EMAIL PROTECTED] Sent: 12 March 2003 07:49 To: [EMAIL PROTECTED] Subject:Re: PRI [7:64999] My take on it is... its out-of-band. It's just multiple logical channels multiplexed onto a single physical channel. It doesn't matter that the logical channels work together, the time slots remain dedicated to their respective channels and the traffic doesn't mix. Just my .02 Karen *** REPLY SEPARATOR *** On 3/11/2003 at 11:37 PM Priscilla Oppenheimer wrote: So, here's a question for you all. I saw this on a practice test. Does ISDN use in-band or out-of-band signaling and is it different for BRI versus PRI? Well, it's not robbed-bit signaling, from what I understand, which I guess means it is out-of-band? The signaling has its own channel. But the signaling channel is bundled with the other channels in the circuit that your order from the telco. BRI has the 2 Bearer channels and the one D channel that enter the CPE together on a 2-wire circuit. With PRI, in Europe, ISDN enters the CPE on an E1 (4-wire ?) circuit. The 15th timeslot is used for signaling. With PRI, in the U.S., ISDN enters the CPE on a T1 4-wire circuit. The 24th timeslot is used for signaling, if you can believe the books. What would be the Cisco answer to the question of ISDN signaling being in-band versus out-of-band? Thanks, Priscilla Jens Neelsen wrote: Hi, Yes, it is one D channel per PRI. An E1 has 32 timeslots of 64kbps (=30B +1D +1timing). A T1 PRI has 24 timeslots + rest (=23D +1D). Timing is in the rest. You can save D channels if put more than one E1/T1 in a bundle. Then you need only one D channel per bundle. So the answer is: not more than one D channel per PRI. Jens --- maine dude wrote: Hi All, Quick question I hope you can help me with. How many D channels does a PRI have? I always thought it was two, but its states 1 in most places. Text taken from the CCNP remote access guide (to make it more confusing): there are 30 timeslots, leaving 2 timeslots for signalling and framing. Timeslot 0 is used for framing and timeslot 16 is used for signalling (counting 0-31). E1 PRI makes use of this same principle. Timeslot 16 is the D channel and timeslot 0 is used for framing information. Please advise. Regards,DJ - With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65138t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: PRI [7:64999]
refer to the BSCN by cisco press by paquet teare for confirmation.; John Botha a icrit dans le message de news: [EMAIL PROTECTED] My opinion of in-band and out-of-band: In-band is when channel control signals are mixed with normal data i.e. dialup. Out-of-band is when a separate channel is used for link control information, i.e. ISDN D-channel. Regards, John Botha CS IT Solutions Tel: +27 (0) 11 205-7000 ext 6851 Fax: +27 (0) 11 807-8992 Cell: 082 334 8267 E-mail:[EMAIL PROTECTED] Adding Value to IT -Original Message- From: Karen E Young [mailto:[EMAIL PROTECTED] Sent: 12 March 2003 07:49 To: [EMAIL PROTECTED] Subject: Re: PRI [7:64999] My take on it is... its out-of-band. It's just multiple logical channels multiplexed onto a single physical channel. It doesn't matter that the logical channels work together, the time slots remain dedicated to their respective channels and the traffic doesn't mix. Just my .02 Karen *** REPLY SEPARATOR *** On 3/11/2003 at 11:37 PM Priscilla Oppenheimer wrote: So, here's a question for you all. I saw this on a practice test. Does ISDN use in-band or out-of-band signaling and is it different for BRI versus PRI? Well, it's not robbed-bit signaling, from what I understand, which I guess means it is out-of-band? The signaling has its own channel. But the signaling channel is bundled with the other channels in the circuit that your order from the telco. BRI has the 2 Bearer channels and the one D channel that enter the CPE together on a 2-wire circuit. With PRI, in Europe, ISDN enters the CPE on an E1 (4-wire ?) circuit. The 15th timeslot is used for signaling. With PRI, in the U.S., ISDN enters the CPE on a T1 4-wire circuit. The 24th timeslot is used for signaling, if you can believe the books. What would be the Cisco answer to the question of ISDN signaling being in-band versus out-of-band? Thanks, Priscilla Jens Neelsen wrote: Hi, Yes, it is one D channel per PRI. An E1 has 32 timeslots of 64kbps (=30B +1D +1timing). A T1 PRI has 24 timeslots + rest (=23D +1D). Timing is in the rest. You can save D channels if put more than one E1/T1 in a bundle. Then you need only one D channel per bundle. So the answer is: not more than one D channel per PRI. Jens --- maine dude wrote: Hi All, Quick question I hope you can help me with. How many D channels does a PRI have? I always thought it was two, but its states 1 in most places. Text taken from the CCNP remote access guide (to make it more confusing): there are 30 timeslots, leaving 2 timeslots for signalling and framing. Timeslot 0 is used for framing and timeslot 16 is used for signalling (counting 0-31). E1 PRI makes use of this same principle. Timeslot 16 is the D channel and timeslot 0 is used for framing information. Please advise. Regards,DJ - With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65154t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: PRI [7:64999]
the D channel in on the 16th not the 15th for an E1 Priscilla Oppenheimer a icrit dans le message de news: [EMAIL PROTECTED] So, here's a question for you all. I saw this on a practice test. Does ISDN use in-band or out-of-band signaling and is it different for BRI versus PRI? Well, it's not robbed-bit signaling, from what I understand, which I guess means it is out-of-band? The signaling has its own channel. But the signaling channel is bundled with the other channels in the circuit that your order from the telco. BRI has the 2 Bearer channels and the one D channel that enter the CPE together on a 2-wire circuit. With PRI, in Europe, ISDN enters the CPE on an E1 (4-wire ?) circuit. The 15th timeslot is used for signaling. With PRI, in the U.S., ISDN enters the CPE on a T1 4-wire circuit. The 24th timeslot is used for signaling, if you can believe the books. What would be the Cisco answer to the question of ISDN signaling being in-band versus out-of-band? Thanks, Priscilla Jens Neelsen wrote: Hi, Yes, it is one D channel per PRI. An E1 has 32 timeslots of 64kbps (=30B +1D +1timing). A T1 PRI has 24 timeslots + rest (=23D +1D). Timing is in the rest. You can save D channels if put more than one E1/T1 in a bundle. Then you need only one D channel per bundle. So the answer is: not more than one D channel per PRI. Jens --- maine dude wrote: Hi All, Quick question I hope you can help me with. How many D channels does a PRI have? I always thought it was two, but its states 1 in most places. Text taken from the CCNP remote access guide (to make it more confusing): there are 30 timeslots, leaving 2 timeslots for signalling and framing. Timeslot 0 is used for framing and timeslot 16 is used for signalling (counting 0-31). E1 PRI makes use of this same principle. Timeslot 16 is the D channel and timeslot 0 is used for framing information. Please advise. Regards,DJ - With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65157t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: PRI [7:64999]
PRI comes in two flavors, T-1 and E-1. T-1 has 23 b channels and 1 d channel. What you describe in your question are the correct timeslots for an E-1. Hopes that helps. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65014t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: PRI [7:64999]
there is actually another channel for framing and synchronization in BRI and PRI T1/E1 and it's speed is as follows: BRI = 48K PRI T1 = 8K PRI E1= 64K fred barreras a icrit dans le message de news: [EMAIL PROTECTED] PRI comes in two flavors, T-1 and E-1. T-1 has 23 b channels and 1 d channel. What you describe in your question are the correct timeslots for an E-1. Hopes that helps. Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65033t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: PRI [7:64999]
there is actually another channel for framing and synchronization in BRI and PRI T1/E1 and it's speed is as follows: BRI = 48K PRI T1 = 8K PRI E1= 64K maine dude a icrit dans le message de news: [EMAIL PROTECTED] Hi All, Quick question I hope you can help me with. How many D channels does a PRI have? I always thought it was two, but its states 1 in most places. Text taken from the CCNP remote access guide (to make it more confusing): there are 30 timeslots, leaving 2 timeslots for signalling and framing. Timeslot 0 is used for framing and timeslot 16 is used for signalling (counting 0-31). E1 PRI makes use of this same principle. Timeslot 16 is the D channel and timeslot 0 is used for framing information. Please advise. Regards,DJ - With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65034t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: PRI [7:64999]
=?iso-8859-1?q?maine=20dude?= wrote: Hi All, Quick question I hope you can help me with. How many D channels does a PRI have? I always thought it was two, but its states 1 in most places. Text taken from the CCNP remote access guide (to make it more confusing): there are 30 timeslots, leaving 2 timeslots for signalling and framing. Timeslot 0 is used for framing and timeslot 16 is used for signalling (counting 0-31). E1 PRI makes use of this same principle. Timeslot 16 is the D channel and timeslot 0 is used for framing information. Please advise. Regards,DJ - With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65062t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: PRI [7:64999]
=?iso-8859-1?q?maine=20dude?= wrote: Hi All, Quick question I hope you can help me with. How many D channels does a PRI have? Just one D channel, used for signaling. U.S. 23B +1D Europe 30B +1D See more comments below. I always thought it was two, but its states 1 in most places. Text taken from the CCNP remote access guide (to make it more confusing): there are 30 timeslots, leaving 2 timeslots for signalling and framing. Timeslot 0 is used for framing and timeslot 16 is used for signalling (counting 0-31). E1 PRI makes use of this same principle. Timeslot 16 is the D channel and timeslot 0 is used for framing information. Please advise. Regards,DJ That's the European standard that you described (twice). European ISDN PRI uses an E1 facility. In Europe, they do things a lot more cleanly than we do here in the U.S. ;-) Does 2.048 Mbps look familiar? It's 64 Kbps times 32, 2^6 x 2^5. That's 32 channels or timeslots. Timeslot 0 is used for framing. Timeslot 16 is used for signalling with ISDN. E1 uses Common Channel Signaling (CCS). In the CCS format, a single timeslot provides a reserved 64-Kbps transparent signaling channel that can be used to exchange signaling information of any type and in any format. In the case of ISDN, timeslot 16 is used as the D channel for sending ISDN signalling material. In the U.S., PRI uses the T1 facility. Does 1.544 Mbps look familiar? It's a little harder to figure out because it's not so clean. But it consists of 24 64-Kbps channels with 8-Kbps for framing. Both E1 and T1 need framing information, which is distinct from signalling. Whereas signaling sends information like the LAPD protocol and dial tone and ringing for telephony, framing specifies a method for a sender to group multiple channels into one circuit. Framing allows the recipient to detect the beginning and end of the data for each set of channels. According to the books, ISDN on T1 uses an entire 64-Kbps channel for signalling. It uses timeslot 24. I'm not sure it really has to be timeslot 24. Howard would know for sure! :-) But it is definitely 64-Kbps taken from somewhere. Priscilla - With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65067t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: PRI [7:64999]
If I remember correctly there are 64 channels in a PRI ISDN. I could be wrong it was one of things I memorized for my CCNA. Steve Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65055t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: PRI [7:64999]
Hi, Yes, it is one D channel per PRI. An E1 has 32 timeslots of 64kbps (=30B +1D +1timing). A T1 PRI has 24 timeslots + rest (=23D +1D). Timing is in the rest. You can save D channels if put more than one E1/T1 in a bundle. Then you need only one D channel per bundle. So the answer is: not more than one D channel per PRI. Jens --- maine dude wrote: Hi All, Quick question I hope you can help me with. How many D channels does a PRI have? I always thought it was two, but its states 1 in most places. Text taken from the CCNP remote access guide (to make it more confusing): there are 30 timeslots, leaving 2 timeslots for signalling and framing. Timeslot 0 is used for framing and timeslot 16 is used for signalling (counting 0-31). E1 PRI makes use of this same principle. Timeslot 16 is the D channel and timeslot 0 is used for framing information. Please advise. Regards,DJ - With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65079t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: PRI [7:64999]
So, here's a question for you all. I saw this on a practice test. Does ISDN use in-band or out-of-band signaling and is it different for BRI versus PRI? Well, it's not robbed-bit signaling, from what I understand, which I guess means it is out-of-band? The signaling has its own channel. But the signaling channel is bundled with the other channels in the circuit that your order from the telco. BRI has the 2 Bearer channels and the one D channel that enter the CPE together on a 2-wire circuit. With PRI, in Europe, ISDN enters the CPE on an E1 (4-wire ?) circuit. The 15th timeslot is used for signaling. With PRI, in the U.S., ISDN enters the CPE on a T1 4-wire circuit. The 24th timeslot is used for signaling, if you can believe the books. What would be the Cisco answer to the question of ISDN signaling being in-band versus out-of-band? Thanks, Priscilla Jens Neelsen wrote: Hi, Yes, it is one D channel per PRI. An E1 has 32 timeslots of 64kbps (=30B +1D +1timing). A T1 PRI has 24 timeslots + rest (=23D +1D). Timing is in the rest. You can save D channels if put more than one E1/T1 in a bundle. Then you need only one D channel per bundle. So the answer is: not more than one D channel per PRI. Jens --- maine dude wrote: Hi All, Quick question I hope you can help me with. How many D channels does a PRI have? I always thought it was two, but its states 1 in most places. Text taken from the CCNP remote access guide (to make it more confusing): there are 30 timeslots, leaving 2 timeslots for signalling and framing. Timeslot 0 is used for framing and timeslot 16 is used for signalling (counting 0-31). E1 PRI makes use of this same principle. Timeslot 16 is the D channel and timeslot 0 is used for framing information. Please advise. Regards,DJ - With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65110t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: PRI [7:64999]
My take on it is... its out-of-band. It's just multiple logical channels multiplexed onto a single physical channel. It doesn't matter that the logical channels work together, the time slots remain dedicated to their respective channels and the traffic doesn't mix. Just my .02 Karen *** REPLY SEPARATOR *** On 3/11/2003 at 11:37 PM Priscilla Oppenheimer wrote: So, here's a question for you all. I saw this on a practice test. Does ISDN use in-band or out-of-band signaling and is it different for BRI versus PRI? Well, it's not robbed-bit signaling, from what I understand, which I guess means it is out-of-band? The signaling has its own channel. But the signaling channel is bundled with the other channels in the circuit that your order from the telco. BRI has the 2 Bearer channels and the one D channel that enter the CPE together on a 2-wire circuit. With PRI, in Europe, ISDN enters the CPE on an E1 (4-wire ?) circuit. The 15th timeslot is used for signaling. With PRI, in the U.S., ISDN enters the CPE on a T1 4-wire circuit. The 24th timeslot is used for signaling, if you can believe the books. What would be the Cisco answer to the question of ISDN signaling being in-band versus out-of-band? Thanks, Priscilla Jens Neelsen wrote: Hi, Yes, it is one D channel per PRI. An E1 has 32 timeslots of 64kbps (=30B +1D +1timing). A T1 PRI has 24 timeslots + rest (=23D +1D). Timing is in the rest. You can save D channels if put more than one E1/T1 in a bundle. Then you need only one D channel per bundle. So the answer is: not more than one D channel per PRI. Jens --- maine dude wrote: Hi All, Quick question I hope you can help me with. How many D channels does a PRI have? I always thought it was two, but its states 1 in most places. Text taken from the CCNP remote access guide (to make it more confusing): there are 30 timeslots, leaving 2 timeslots for signalling and framing. Timeslot 0 is used for framing and timeslot 16 is used for signalling (counting 0-31). E1 PRI makes use of this same principle. Timeslot 16 is the D channel and timeslot 0 is used for framing information. Please advise. Regards,DJ - With Yahoo! Mail you can get a bigger mailbox -- choose a size that fits your needs [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=65128t=64999 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
